The 12pm rule that could be making your hay fever worse
It seems harmless enough, but one everyday household habit could be bringing pollen further into the home. A doctor explains what to know.
It seems harmless enough, but one everyday household habit could be bringing pollen further into the home. A doctor explains what to know.
There are few things more satisfying than washing that has been dried on the line. It smells fresher, costs nothing and gives you that small but pleasing sense of having won at domestic life. If you have hay fever, though, it may also be one of the reasons you keep sneezing indoors.
Especially if you habitually put your washing outside to dry in the warm early afternoon sun.
For many people, home is where symptoms are supposed to ease off but if you’re bringing pollen back inside on clothes, towels and bedding, your house can start working against you. It can be particularly noticeable for people whose symptoms are worse first thing in the morning, or who find they are sneezing more at night despite spending most of the day indoors.
Dr Lucy Hooper, a GP and co-founder of Coyne Medical, says drying washing outdoors during pollen season can quietly add to the problem.
“There is significantly more pollen outdoors than inside your home,” she says.
“When laundry is dried outside, it can collect pollen from the air, which is then brought back indoors on the fabric. This increases your overall exposure to pollen.”
In other words, those lovely fresh sheets may be carrying rather more than just the scent of spring.
Hay fever sufferers tend to think of pollen as something they encounter outside – in the garden, on a walk or while sitting in the park. Pollen does not stay politely outdoors, though. Instead, it clings to fabric, hair and skin, then comes straight back into the house with you.
That means laundry dried outside can act a bit like a giant pollen trap, especially when it comes to towels, pillowcases and bedding that sit close to your face for hours at a time.
“Using a dryer can significantly reduce pollen on clothing and bedding,” says Dr Hooper.
One small study published in 2020 found that mechanical drying removed more than 95% of the pollen and allergen load from contaminated fabrics, which helps explain why tumble drying may be a better option on high-pollen days.
If you do want to dry things outside, timing matters.
According to Dr Hooper, pollen levels are usually worse during the day, especially from late morning into the afternoon. Grass pollen, in particular, tends to peak during these hours. Warm, sunny weather also encourages more pollen release, while windy conditions can spread it further.
“Pollen levels are generally higher during the daytime, particularly from late morning through to the afternoon,” she says.
“Grass pollen, in particular, tends to peak during these hours.
“Warmer weather and increased sunlight lead to higher pollen release. Windy conditions can carry pollen over greater distances, increasing exposure.”
Rain, on the other hand, can offer brief relief.
“Rain and higher humidity can temporarily reduce airborne pollen levels by washing it out of the air,” says Dr Hooper.
That may explain why some people feel better on damp days, even if the rest of us are muttering about the washing not drying.
The good news is that a few simple changes can make a real difference.
Dr Hooper says one of the most effective steps is to reduce the amount of pollen getting into your home in the first place. That means keeping windows and doors closed when pollen counts are high.
“Keep windows and doors closed during high pollen periods, especially from late morning to late afternoon,” she says.
“Checking pollen forecasts, such as those from the Met Office, can help you plan ahead.”
Of course, that is easier said than done when it is hot and stuffy indoors.
“Some people may benefit from using air conditioning to cool and ventilate rooms, as filters can help reduce pollen levels,” says Dr Hooper.
“HEPA air filters are a more cost-effective option and can remove over 99% of airborne pollen particles.”
She also recommends showering and changing clothes after spending time outside, so you’re not trailing pollen through the house without realising it.
“Even washing your face and hands when you get home can help reduce exposure,” she says.
And if your symptoms seem to linger no matter what, it is worth looking at the softer surfaces around you.
“Keep windows, doors and surrounding surfaces clean, as pollen can settle on these areas,” says Dr Hooper.
“Regularly vacuum and clean soft furnishings such as bedding and sofas, which can trap pollen.”
Line-dried laundry may be one of life’s quieter pleasures, but if your hay fever is playing up, it may be worth treating it with a little suspicion. Sometimes the culprit is not the great outdoors but the pillowcase you brought back in from it.
If hay fever tends to follow you indoors, these small changes may help:
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